Give a ring to prince returning figure welcomes (6)
I believe the answer is:
enhalo
'give a ring to' is the definition.
(to give a halo)
'prince returning figure welcomes' is the wordplay.
'prince' becomes 'hal' (name for Prince Henry in Shakespeare's histories).
'returning' shows that the letters should be reversed in order.
'figure' becomes 'one' (a numerical figure).
'welcomes' is an insertion indicator.
'one' in reverse letter order is 'eno'.
'hal' put within 'eno' is 'ENHALO'.
(Other definitions for enhalo that I've seen before include "Give glory to" , "Ring about" , "Sanctify" , "Put aureole round" , "Suggest sanctity" .)